Speaker stand



FIG. 1 is a top, front and side perspective view of a speaker stand showing my new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a speaker stand, as shown and described. 